Eye-Tracking Light Field Display with Dynamic Viewing Window
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Solution Overview
Problem
Current 3D image display technologies face challenges in providing high-density light fields for HD images without causing viewing fatigue due to insufficient resources and convergence-accommodation conflicts, particularly when trying to generate high-definition 3D images without eyewear.
Innovation Solution
A display apparatus equipped with a position sensor, controller, light generator, and light modulator that calculates the user's eye position to dynamically set a viewing window and adjust directional light intensity, using a variable slit and LCD pixels to generate a high-density light field image within the viewing window, reducing the number of required pixels and avoiding convergence-accommodation conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a full HD light field display is implemented to provide high-definition 3D images, then image quality is improved, but the resource requirements (number of pixels) become insufficient
Solution Approach 1:
The patent applies local quality by concentrating light field resources only in the region where the user's eye is actually located (the viewing window), rather than distributing resources uniformly across the entire display area. This allows high-definition light field rendering where needed while reducing pixel requirements in regions that do not contribute to the current viewing experience.
Solution Approach 2:
The patent implements dynamics by dynamically adjusting the viewing window position and size based on real-time eye position tracking. The system continuously updates which region of the display receives high-density light field resources, allowing the high-definition quality to follow the user's eye movements while maintaining lower resource requirements overall.
2Ease of operation
If traditional 3D display methods are used to generate 3D images, then 3D effect is achieved, but convergence-accommodation conflict causes viewing fatigue
Solution Approach 1:
The patent replaces the mechanical/physiological conflict in traditional 3D displays with an optical field-based solution. By using light field rendering that provides accurate depth cues through directional light information, the system substitutes the conflicting mechanical focusing and convergence mechanisms with a more natural optical viewing experience that reduces accommodation-convergence conflict.
3Quantity of substance
If the viewing window is dynamically adjusted to cover the user's eye position, then light field concentration is improved, but the complexity of eye position detection and window adjustment increases
Solution Approach 1:
The patent uses an intermediary eye position detection system (such as cameras or sensors) that mediates between the user's eye and the display system. This intermediary detects eye position and provides feedback to the controller, which then adjusts the viewing window and light field distribution accordingly, enabling automatic adaptation without requiring complex manual calibration.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables the creation of high-density light field images with significantly reduced pixel usage, effectively addressing the resource insufficiency and fatigue issues, while providing a more efficient and comfortable 3D viewing experience without the need for eyewear.
Implementation Method 1
The position sensor may include at least one camera that may photograph the eye position of the user
Implementation Method 2
a light generator and a light modulator that may generate a light field image in the viewing window
Data Source
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AI summary
A display apparatus that may generate a high density light field image is provided. The display apparatus may identify an eye position of a user and set a virtual viewing window around the eye of the user. The display apparatus may generate a directional light corresponding to the viewing window and generate a high density light field image.